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Seiko King Seiko KSK
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Seiko King Seiko KSK

Dress

The King Seiko KSK is widely praised for its refined finishing, with owners and reviewers noting its sharp case, faceted lugs, and well-executed dial indices, often comparing its polishing favorably to Grand Seiko. Enthusiasts appreciate its slim, retro design, with some stating it wears smaller than its official size due to the cushion case and close-to-the-wrist feel. The use of the slimline Calibre 6L35 movement is seen as an upgrade, maintaining the watch's slender profile, though some owners express concern over the price point and the perceived value of the movement. Accuracy figures vary, with one owner reporting +5 to +7 seconds per day, while another notes +15/-10 seconds per day. Some owners have noted minor quality control issues such as misaligned screws or a burr on a hand. On balance, owners and reviewers rate the King Seiko KSK highly for its exceptional case and dial finishing at its price point.

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King Seiko KSK
King Seiko KSK
King Seiko KSK
3 Variants
Lume:LumiBrite on hands and index(es)
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Retail MSRP
$1,900
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Alternatives
Case
36.1mm
Power Reserve
72h
Movement
Automatic
Water Resistance
100m
Crystal
Sapphire + AR
01

Case Dimensions

Diameter36.1mm
Thickness11.6mm
Lug-to-Lug43mm
Lug Width19mm
02

Case Build

MaterialStainless Steel
Water Resistance100m
03

Crystal & Dial

CrystalSapphire
ShapeBox
AR CoatingAnti-reflective coating on inner surface
LumeLumiBrite on hands and index(es)
04

Movement

Caliber
6R51
TypeAutomatic
Beat Rate—
Power Reserve72 hours
Jewels24
HackingNo
Hand-WindingNo
ComplicationsTime only
05

Design Language

Dial styleSunburst
BezelFixed
Bracelet / strapLug-attached bracelet
HandsDauphine
AI-detected from product image · 5/22/2026
In a nutshell

The Seiko King Seiko KSK is an automatic dress watch, with a 36.1mm stainless steel case, 11.6mm thick, powered by the 6R51 movement and a 72-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal. Manufacturer MSRP is $1,900.

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